초록 ▼

Disclosed is a brake disc rotor comprising a first disc plate, a second disc plate facing the first disc plate, a plurality of fins arranged in the radial direction of the brake disc rotor between the first and second disc plates, and a plurality of ventilation holes each of which is positioned betw

Disclosed is a brake disc rotor comprising a first disc plate, a second disc plate facing the first disc plate, a plurality of fins arranged in the radial direction of the brake disc rotor between the first and second disc plates, and a plurality of ventilation holes each of which is positioned between neighboring fins of the plurality of fins and communicates a space on the inner circumferential side and a space on the outer circumferential side in the radial direction of the brake disc rotor. The plurality of fins have a plurality of sets each including two long fins and two short fins, one of the two long fins has an expanded part which is expanded in its width direction, the long fins and the short fins are alternately arranged in the circumferential direction of the brake disc rotor in each of the plurality of sets, and the plurality of sets are arranged at equal intervals in the circumferential direction of the brake disc rotor.

대표청구항 ▼

[ What is claimed is:] [1.]1. A brake disc rotor comprising:a first disc plate;a second disc plate opposed to the first disc plate;a plurality of fins each of which extends in a radial direction of the brake disc rotor between the first and second disc plates; anda plurality of ventilation holes eac

[ What is claimed is:] [1.]1. A brake disc rotor comprising:a first disc plate;a second disc plate opposed to the first disc plate;a plurality of fins each of which extends in a radial direction of the brake disc rotor between the first and second disc plates; anda plurality of ventilation holes each of which is positioned between neighboring fins,wherein the plurality of fins are arranged in a plurality of sets wherein the plurality of sets are arranged sequentially in an alternating pattern in a circumferential direction of the brake disc rotor and each of the plurality of sets includes two long fins and two short fins,wherein one of the two long fins has an expanded wide part and wherein the other of the two long fins is free of an expanded wide part,wherein the two long fins and the two short fins are arranged in each of the plurality of sets in such a manner that the other of the two long fins, one of the two short fins, the one of the two long fins with the expanded wide part and the other of the two short fins are sequentially arranged in the circumferential direction of the brake disc rotor, or in such a manner that the one of the two long fins, one of the two short fins, the other of the two long fins and the other of the two short fins are sequentially arranged in the circumferential direction of the brake disc rotor.